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How to specify method name sequence in TestNG?
A TestNG class can have various TestNG methods such as @BeforeTest, @AfterTest, @BeforeSuite, @BeforeClass, @BeforeMethod, @test, etc. In this article, we will explain the order of execution of different TestNG methods.
TestNG consists of the following methods to support the main @Test method. The order of execution should be as follows −
<beforeSuite> <beforeTest> <beforeClass> <beforeMethod> <test1> <afterMethod> <afterClass> <afterTest> <afterSuite>
Key points in this order are:
First of all, beforeSuite() method is executed only once.
The afterSuite() method executes only once.
Even the methods beforeTest(), beforeClass(), afterClass(), and afterTest() methods are executed only once.
beforeMethod() method executes for each test case (every time for a new @Test), but before executing the test case.
afterMethod() method executes for each test case (every time for a new @Test), but after executing the test case.
In between beforeMethod() and afterMethod(), each test case (@Test annotation’s method) executes.
Approach/Algorithm to solve this problem:
Step 1 − import org.testng.annotations.* for TestNG.
Step 2 − Write an annotation as @test
Step 3 − Create a method for the @test annotation as test1.
Step 4 − Repeat the steps for test2 and test3.
Step 5 − Write different annotations and their respective methods. For example, @beforeSuite, @afterSuite, @beforeTest, @afterTest, @beforeClass, @afterClass, @beforeMethod, @afterMethod.
Step 6 − Now create the testNG.xml as given below.
Step 7 − Finally, run the testNG.xml or directly testNG class in IDE or compile and run it using command line.
Example
Use the following code to show the order of different TestNG methods −
import org.testng.annotations.*; import org.testng.annotations.Test; public class OrderofTestExecutionInTestNG { // test case 1 @Test public void testCase1() { System.out.println("in test case 1"); } // test case 2 @Test public void testCase2() { System.out.println("in test case 2"); } @BeforeMethod public void beforeMethod() { System.out.println("in beforeMethod"); } @AfterMethod public void afterMethod() { System.out.println("in afterMethod"); } @BeforeClass public void beforeClass() { System.out.println("in beforeClass"); } @AfterClass public void afterClass() { System.out.println("in afterClass"); } @BeforeTest public void beforeTest() { System.out.println("in beforeTest"); } @AfterTest public void afterTest() { System.out.println("in afterTest"); } @BeforeSuite public void beforeSuite() { System.out.println("in beforeSuite"); } @AfterSuite public void afterSuite() { System.out.println("in afterSuite"); } }
testng.xml
This is a configuration file that is used to organize and run the TestNG test cases. It is very handy when limited tests are needed to execute rather than the full suite.
<?xml version = "1.0" encoding = "UTF-8"?> <!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" > <suite name = "Suite1"> <test name = "test1"> <classes> <class name = "OrderofTestExecutionInTestNG"/> </classes> </test> </suite>
Output
in beforeSuite in beforeTest in beforeClass in beforeMethod in test case 1 in afterMethod in beforeMethod in test case 2 in afterMethod in afterClass in afterTest in afterSuite